Comedian Darrell Hammond — famed for his 12-year tenure on Saturday Night Live and dead-on impersonation of President Clinton — is barely able to work after a late June car crash in Sag Harbor, his lawyer said today.

“He suffered fractured ribs and a severe lower back injury,” said lawyer Melanie Little, who filed a Manhattan lawsuit on Hammond’s behalf today.

Hammond is a stand-up comedian — but now can’t stand up for lengthy periods, Little told The Post.

“It affects his ability to perform,” she said of his injuries. “He’s in pain, and had to cancel many performances. He can’t fly and he can’t stand up.”

Hammond canceled his two final performances as Truman Capote in his one-man play “Tru,” in a Sag Harbor theater, and since then has had to cut short his performances at Caroline’s, Little said.

The suit seeks unspecified compensation from the driver of the other car, Jose J. Mendez, and the buddy who was driving Hammond’s car, Dona Monteleone. “It’s just a formality, for insurance purposes,” Little said of Hammond naming his pal in the suit.